Genetic and phenotypic correlations among size-related traits, and heritability variation between body parts in Drosophila buzzatii

Recent studies have shown that body size is a heritable trait phenotypically correlated with several fitness components in wild populations of the cactophilic fly Drosophila buzzatii. To obtain further information on size-related variation, heritabilities as well as genetic and phenotypic correlatio...

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Autores principales: Norry, F.M., Vilardi, J.C., Hasson, E.
Formato: JOUR
Materias:
Drosophila buzzatii
Environmental variability
Genetic and phenotypic correlations
Heritability
Size-related traits
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00166707_v101_n2_p131_Norry
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00166707_v101_n2_p131_Norry2023-10-03T14:14:10Z Genetic and phenotypic correlations among size-related traits, and heritability variation between body parts in Drosophila buzzatii Norry, F.M. Vilardi, J.C. Hasson, E. Drosophila buzzatii Environmental variability Genetic and phenotypic correlations Heritability Size-related traits Drosophila buzzatii Recent studies have shown that body size is a heritable trait phenotypically correlated with several fitness components in wild populations of the cactophilic fly Drosophila buzzatii. To obtain further information on size-related variation, heritabilities as well as genetic and phenotypic correlations among size-related traits of several body pans (head, thorax and wings) were estimated. The study was carried out on an Argentinean natural population in which size-related selection was previously detected. The genetic parameters were estimated using offspring-parent regressions (105 families) in the laboratory G2 generation of a sample of wild flies. The traits were also scored in Wild-Caught Flies (WCF). Laboratory-Reared Flies (LRF) were larger and less variable than WCF. Although heritability estimates were significant for all traits, heritabitities were higher for thorax-wing traits than for head traits. Phenotypic and genetic correlations were all positive. The highest genetic correlations were found between traits which are both functionally and developmentally related. Genetic and phenotypic correlations estimated in the lab show similar correlation patterns (r = 0.49, P = 0.02, Mantel's test). However, phenotypic correlations were found to be typically larger in WCF than in LRF. The genetic correlation matrix estimated in the relatively homogeneous lab environment is not simply a constant multiplicative factor of the phenotypic correlation matrix estimated in WCF. Fil:Norry, F.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vilardi, J.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Hasson, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00166707_v101_n2_p131_Norry
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Drosophila buzzatii
Environmental variability
Genetic and phenotypic correlations
Heritability
Size-related traits
Drosophila buzzatii
spellingShingle Drosophila buzzatii
Environmental variability
Genetic and phenotypic correlations
Heritability
Size-related traits
Drosophila buzzatii
Norry, F.M.
Vilardi, J.C.
Hasson, E.
Genetic and phenotypic correlations among size-related traits, and heritability variation between body parts in Drosophila buzzatii
topic_facet Drosophila buzzatii
Environmental variability
Genetic and phenotypic correlations
Heritability
Size-related traits
Drosophila buzzatii
description Recent studies have shown that body size is a heritable trait phenotypically correlated with several fitness components in wild populations of the cactophilic fly Drosophila buzzatii. To obtain further information on size-related variation, heritabilities as well as genetic and phenotypic correlations among size-related traits of several body pans (head, thorax and wings) were estimated. The study was carried out on an Argentinean natural population in which size-related selection was previously detected. The genetic parameters were estimated using offspring-parent regressions (105 families) in the laboratory G2 generation of a sample of wild flies. The traits were also scored in Wild-Caught Flies (WCF). Laboratory-Reared Flies (LRF) were larger and less variable than WCF. Although heritability estimates were significant for all traits, heritabitities were higher for thorax-wing traits than for head traits. Phenotypic and genetic correlations were all positive. The highest genetic correlations were found between traits which are both functionally and developmentally related. Genetic and phenotypic correlations estimated in the lab show similar correlation patterns (r = 0.49, P = 0.02, Mantel's test). However, phenotypic correlations were found to be typically larger in WCF than in LRF. The genetic correlation matrix estimated in the relatively homogeneous lab environment is not simply a constant multiplicative factor of the phenotypic correlation matrix estimated in WCF.
format JOUR
author Norry, F.M.
Vilardi, J.C.
Hasson, E.
author_facet Norry, F.M.
Vilardi, J.C.
Hasson, E.
author_sort Norry, F.M.
title Genetic and phenotypic correlations among size-related traits, and heritability variation between body parts in Drosophila buzzatii
title_short Genetic and phenotypic correlations among size-related traits, and heritability variation between body parts in Drosophila buzzatii
title_full Genetic and phenotypic correlations among size-related traits, and heritability variation between body parts in Drosophila buzzatii
title_fullStr Genetic and phenotypic correlations among size-related traits, and heritability variation between body parts in Drosophila buzzatii
title_full_unstemmed Genetic and phenotypic correlations among size-related traits, and heritability variation between body parts in Drosophila buzzatii
title_sort genetic and phenotypic correlations among size-related traits, and heritability variation between body parts in drosophila buzzatii
url http://hdl.handle.net/20.500.12110/paper_00166707_v101_n2_p131_Norry
work_keys_str_mv AT norryfm geneticandphenotypiccorrelationsamongsizerelatedtraitsandheritabilityvariationbetweenbodypartsindrosophilabuzzatii
AT vilardijc geneticandphenotypiccorrelationsamongsizerelatedtraitsandheritabilityvariationbetweenbodypartsindrosophilabuzzatii
AT hassone geneticandphenotypiccorrelationsamongsizerelatedtraitsandheritabilityvariationbetweenbodypartsindrosophilabuzzatii
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